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Revision 1.6 by root, Mon Jan 2 18:20:23 2006 UTC vs.
Revision 1.89 by root, Thu Jan 12 12:10:06 2006 UTC

		1	=encoding utf8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	rxvtperl - rxvt-unicode's embedded perl interpreter	5	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter
4		6
5	=head1 SYNOPSIS	7	=head1 SYNOPSIS
6		8
7	* Put your scripts into F<@@RXVT_LIBDIR@@/urxvt/perl-ext/>, they will be loaded automatically.	9	# create a file grab_test in $HOME:
8
9	* Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
10	thus must be encoded as UTF-8.
11		10
12	sub on_sel_grab {	11	sub on_sel_grab {
13	warn "you selected ", $_[0]->selection;	12	warn "you selected ", $_[0]->selection;
14	()	13	()
15	}	14	}
16		15
17	1	16	# start a @@RXVT_NAME@@ using it:
		17
		18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
18		19
19	=head1 DESCRIPTION	20	=head1 DESCRIPTION
20		21
21	On startup, @@RXVT_NAME@@ will scan F<@@RXVT_LIBDIR@@/urxvt/perl-ext/>	22	Everytime a terminal object gets created, extension scripts specified via
22	for files and will load them. Everytime a terminal object gets created,	23	the C<perl> resource are loaded and associated with it.
23	the directory specified by the C<perl-lib> resource will be additionally	24
24	scanned.	25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
		26	thus must be encoded as UTF-8.
25		27
26	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where	28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
27	scripts will be shared for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
28		30
29	Hooks in scripts specified by C<perl-lib> will only be called for the	31	=head1 PREPACKAGED EXTENSIONS
30	terminals created with that specific option value.	32
		33	This section describes the extensions delivered with this release. You can
		34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
		35
		36	You can activate them like this:
		37
		38	@@RXVT_NAME@@ -pe <extensionname>
		39
		40	=over 4
		41
		42	=item selection (enabled by default)
		43
		44	(More) intelligent selection. This extension tries to be more intelligent
		45	when the user extends selections (double-click and further clicks). Right
		46	now, it tries to select words, urls and complete shell-quoted
		47	arguments, which is very convenient, too, if your F<ls> supports
		48	C<--quoting-style=shell>.
		49
		50	A double-click usually selects the word under the cursor, further clicks
		51	will enlarge the selection.
		52
		53	The selection works by trying to match a number of regexes and displaying
		54	them in increasing order of length. You can add your own regexes by
		55	specifying resources of the form:
		56
		57	URxvt.selection.pattern-0: perl-regex
		58	URxvt.selection.pattern-1: perl-regex
		59	...
		60
		61	The index number (0, 1...) must not have any holes, and each regex must
		62	contain at least one pair of capturing parentheses, which will be used for
		63	the match. For example, the followign adds a regex that matches everything
		64	between two vertical bars:
		65
		66	URxvt.selection.pattern-0: \\|([^|]+)\\|
		67
		68	You can look at the source of the selection extension to see more
		69	interesting uses, such as parsing a line from beginning to end.
		70
		71	This extension also offers the following bindable keyboard command:
		72
		73	=over 4
		74
		75	=item rot13
		76
		77	Rot-13 the selection when activated. Used via keyboard trigger:
		78
		79	URxvt.keysym.C-M-r: perl:selection:rot13
		80
		81	=back
		82
		83	=item option-popup (enabled by default)
		84
		85	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		86	runtime.
		87
		88	=item selection-popup (enabled by default)
		89
		90	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		91	text into various other formats/action (such as uri unescaping, perl
		92	evalution, web-browser starting etc.), depending on content.
		93
		94	=item searchable-scrollback<hotkey> (enabled by default)
		95
		96	Adds regex search functionality to the scrollback buffer, triggered
		97	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		98	input/output is suspended and a regex is displayed at the bottom of the
		99	screen.
		100
		101	Inputting characters appends them to the regex and continues incremental
		102	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		103	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		104	bottom. C<Escape> leaves search mode and returns to the point where search
		105	was started, while C<Enter> or C<Return> stay at the current position and
		106	additionally stores the first match in the current line into the primary
		107	selection.
		108
		109	=item selection-autotransform
		110
		111	This selection allows you to do automatic transforms on a selection
		112	whenever a selection is made.
		113
		114	It works by specifying perl snippets (most useful is a single C<s///>
		115	operator) that modify C<$_> as resources:
		116
		117	URxvt.selection-autotransform.0: transform
		118	URxvt.selection-autotransform.1: transform
		119	...
		120
		121	For example, the following will transform selections of the form
		122	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		123	$word>:
		124
		125	URxvt.selection-autotransform.0: s/^(\\S+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		126
		127	And this example matches the same,but replaces it with vi-commands you can
		128	paste directly into your (vi :) editor:
		129
		130	URxvt.selection-autotransform.0: s/^(S+):(d+):?$/\\x1b:e \\Q$1\\E\\x0d:$2\\x0d/
		131
		132	=item mark-urls
		133
		134	Uses per-line display filtering (C<on_line_update>) to underline urls and
		135	make them clickable. When middle-clicked, the program specified in the
		136	resource C<urlLauncher> (default C<x-www-browser>) will be started with
		137	the URL as first argument.
		138
		139	=item block-graphics-to-ascii
		140
		141	A not very useful example of filtering all text output to the terminal,
		142	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		143	similar-looking ascii character.
		144
		145	=item digital-clock
		146
		147	Displays a digital clock using the built-in overlay.
		148
		149	=item example-refresh-hooks
		150
		151	Displays a very simple digital clock in the upper right corner of the
		152	window. Illustrates overwriting the refresh callbacks to create your own
		153	overlays or changes.
		154
		155	=back
		156
		157	=head1 API DOCUMENTATION
31		158
32	=head2 General API Considerations	159	=head2 General API Considerations
33		160
34	All objects (such as terminals, time watchers etc.) are typical	161	All objects (such as terminals, time watchers etc.) are typical
35	reference-to-hash objects. The hash can be used to store anything you	162	reference-to-hash objects. The hash can be used to store anything you
36	like. The only reserved member is C<_ptr>, which must not be changed.	163	like. All members starting with an underscore (such as C<_ptr> or
		164	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
		165	modified).
37		166
38	When objects are destroyed on the C++ side, the perl object hashes are	167	When objects are destroyed on the C++ side, the perl object hashes are
39	emptied, so its best to store related objects such as time watchers and	168	emptied, so its best to store related objects such as time watchers and
40	the like inside the terminal object so they get destroyed as soon as the	169	the like inside the terminal object so they get destroyed as soon as the
41	terminal is destroyed.	170	terminal is destroyed.
42		171
		172	Argument names also often indicate the type of a parameter. Here are some
		173	hints on what they mean:
		174
		175	=over 4
		176
		177	=item $text
		178
		179	Rxvt-unicodes special way of encoding text, where one "unicode" character
		180	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		181
		182	=item $string
		183
		184	A perl text string, with an emphasis on I<text>. It can store all unicode
		185	characters and is to be distinguished with text encoded in a specific
		186	encoding (often locale-specific) and binary data.
		187
		188	=item $octets
		189
		190	Either binary data or - more common - a text string encoded in a
		191	locale-specific way.
		192
		193	=back
		194
		195	=head2 Extension Objects
		196
		197	Very perl extension is a perl class. A separate perl object is created
		198	for each terminal and each extension and passed as the first parameter to
		199	hooks. So extensions can use their C<$self> object without having to think
		200	about other extensions, with the exception of methods and members that
		201	begin with an underscore character C<_>: these are reserved for internal
		202	use.
		203
		204	Although it isn't a C<urxvt::term> object, you can call all methods of the
		205	C<urxvt::term> class on this object.
		206
		207	It has the following methods and data members:
		208
		209	=over 4
		210
		211	=item $urxvt_term = $self->{term}
		212
		213	Returns the C<urxvt::term> object associated with this instance of the
		214	extension. This member I<must not> be changed in any way.
		215
		216	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		217
		218	Dynamically enable the given hooks (named without the C<on_> prefix) for
		219	this extension, replacing any previous hook. This is useful when you want
		220	to overwrite time-critical hooks only temporarily.
		221
		222	=item $self->disable ($hook_name[, $hook_name..])
		223
		224	Dynamically disable the given hooks.
		225
		226	=back
		227
43	=head2 Hooks	228	=head2 Hooks
44		229
45	The following subroutines can be declared in loaded scripts, and will be called	230	The following subroutines can be declared in extension files, and will be
46	whenever the relevant event happens.	231	called whenever the relevant event happens.
47		232
		233	The first argument passed to them is an extension oject as described in
		234	the in the C<Extension Objects> section.
		235
48	All of them must return a boolean value. If it is true, then the event	236	B<All> of these hooks must return a boolean value. If it is true, then the
49	counts as being I<consumed>, and the invocation of other hooks is skipped,	237	event counts as being I<consumed>, and the invocation of other hooks is
50	and the relevant action might not be carried out by the C++ code.	238	skipped, and the relevant action might not be carried out by the C++ code.
51		239
52	When in doubt, return a false value (preferably C<()>).	240	I<< When in doubt, return a false value (preferably C<()>). >>
53		241
54	=over 4	242	=over 4
55		243
56	=item on_init $term	244	=item on_init $term
57		245
58	Called after a new terminal object has been initialized, but before	246	Called after a new terminal object has been initialized, but before
59	windows are created or the command gets run.	247	windows are created or the command gets run. Most methods are unsafe to
		248	call or deliver senseless data, as terminal size and other characteristics
		249	have not yet been determined. You can safely query and change resources,
		250	though.
60		251
61	=item on_reset $term	252	=item on_reset $term
62		253
63	Called after the screen is "reset" for any reason, such as resizing or	254	Called after the screen is "reset" for any reason, such as resizing or
64	control sequences. Here is where you can react on changes to size-related	255	control sequences. Here is where you can react on changes to size-related
…		…
84	requested from the server. The selection text can be queried and changed	275	requested from the server. The selection text can be queried and changed
85	by calling C<< $term->selection >>.	276	by calling C<< $term->selection >>.
86		277
87	Returning a true value aborts selection grabbing. It will still be hilighted.	278	Returning a true value aborts selection grabbing. It will still be hilighted.
88		279
89	=item on_focus_in $term	280	=item on_sel_extend $term
90		281
91	Called whenever the window gets the keyboard focus, before urxvt does	282	Called whenever the user tries to extend the selection (e.g. with a double
92	focus in processing.	283	click) and is either supposed to return false (normal operation), or
		284	should extend the selection itelf and return true to suppress the built-in
		285	processing. This can happen multiple times, as long as the callback
		286	returns true, it will be called on every further click by the user and is
		287	supposed to enlarge the selection more and more, if possible.
93		288
94	=item on_focus_out $term	289	See the F<selection> example extension.
95
96	Called wheneever the window loses keyboard focus, before urxvt does focus
97	out processing.
98		290
99	=item on_view_change $term, $offset	291	=item on_view_change $term, $offset
100		292
101	Called whenever the view offset changes, i..e the user or program	293	Called whenever the view offset changes, i..e the user or program
102	scrolls. Offset C<0> means display the normal terminal, positive values	294	scrolls. Offset C<0> means display the normal terminal, positive values
…		…
110		302
111	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	303	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
112	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	304	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
113	number of lines that will be in the scrollback buffer.	305	number of lines that will be in the scrollback buffer.
114		306
115	=item on_tty_activity $term *NYI*	307	=item on_osc_seq $term, $string
116		308
117	Called whenever the program(s) running in the urxvt window send output.	309	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		310	operating system command) is processed. Cursor position and other state
		311	information is up-to-date when this happens. For interoperability, the
		312	string should start with the extension name and a colon, to distinguish
		313	it from commands for other extensions, and this might be enforced in the
		314	future.
		315
		316	Be careful not ever to trust (in a security sense) the data you receive,
		317	as its source can not easily be controleld (e-mail content, messages from
		318	other users on the same system etc.).
		319
		320	=item on_add_lines $term, $string
		321
		322	Called whenever text is about to be output, with the text as argument. You
		323	can filter/change and output the text yourself by returning a true value
		324	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		325	might be very slow, however, as your hook is called for B<all> text being
		326	output.
		327
		328	=item on_tt_write $term, $octets
		329
		330	Called whenever some data is written to the tty/pty and can be used to
		331	suppress or filter tty input.
		332
		333	=item on_line_update $term, $row
		334
		335	Called whenever a line was updated or changed. Can be used to filter
		336	screen output (e.g. underline urls or other useless stuff). Only lines
		337	that are being shown will be filtered, and, due to performance reasons,
		338	not always immediately.
		339
		340	The row number is always the topmost row of the line if the line spans
		341	multiple rows.
		342
		343	Please note that, if you change the line, then the hook might get called
		344	later with the already-modified line (e.g. if unrelated parts change), so
		345	you cannot just toggle rendition bits, but only set them.
118		346
119	=item on_refresh_begin $term	347	=item on_refresh_begin $term
120		348
121	Called just before the screen gets redrawn. Can be used for overlay	349	Called just before the screen gets redrawn. Can be used for overlay
122	or similar effects by modify terminal contents in refresh_begin, and	350	or similar effects by modify terminal contents in refresh_begin, and
…		…
125		353
126	=item on_refresh_end $term	354	=item on_refresh_end $term
127		355
128	Called just after the screen gets redrawn. See C<on_refresh_begin>.	356	Called just after the screen gets redrawn. See C<on_refresh_begin>.
129		357
		358	=item on_keyboard_command $term, $string
		359
		360	Called whenever the user presses a key combination that has a
		361	C<perl:string> action bound to it (see description of the B<keysym>
		362	resource in the @@RXVT_NAME@@(1) manpage).
		363
		364	=item on_focus_in $term
		365
		366	Called whenever the window gets the keyboard focus, before rxvt-unicode
		367	does focus in processing.
		368
		369	=item on_focus_out $term
		370
		371	Called wheneever the window loses keyboard focus, before rxvt-unicode does
		372	focus out processing.
		373
		374	=item on_key_press $term, $event, $keysym, $octets
		375
		376	=item on_key_release $term, $event, $keysym
		377
		378	=item on_button_press $term, $event
		379
		380	=item on_button_release $term, $event
		381
		382	=item on_motion_notify $term, $event
		383
		384	=item on_map_notify $term, $event
		385
		386	=item on_unmap_notify $term, $event
		387
		388	Called whenever the corresponding X event is received for the terminal If
		389	the hook returns true, then the even will be ignored by rxvt-unicode.
		390
		391	The event is a hash with most values as named by Xlib (see the XEvent
		392	manpage), with the additional members C<row> and C<col>, which are the row
		393	and column under the mouse cursor.
		394
		395	C<on_key_press> additionally receives the string rxvt-unicode would
		396	output, if any, in locale-specific encoding.
		397
		398	subwindow.
		399
		400	=back
		401
		402	=cut
		403
		404	package urxvt;
		405
		406	use utf8;
		407	use strict;
		408	use Carp ();
		409	use Scalar::Util ();
		410	use List::Util ();
		411
		412	our $VERSION = 1;
		413	our $TERM;
		414	our @HOOKNAME;
		415	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		416	our %OPTION;
		417
		418	our $LIBDIR;
		419	our $RESNAME;
		420	our $RESCLASS;
		421	our $RXVTNAME;
		422
		423	=head2 Variables in the C<urxvt> Package
		424
		425	=over 4
		426
		427	=item $urxvt::LIBDIR
		428
		429	The rxvt-unicode library directory, where, among other things, the perl
		430	modules and scripts are stored.
		431
		432	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		433
		434	The resource class and name rxvt-unicode uses to look up X resources.
		435
		436	=item $urxvt::RXVTNAME
		437
		438	The basename of the installed binaries, usually C<urxvt>.
		439
		440	=item $urxvt::TERM
		441
		442	The current terminal. This variable stores the current C<urxvt::term>
		443	object, whenever a callback/hook is executing.
		444
130	=back	445	=back
131		446
132	=head2 Functions in the C<urxvt> Package	447	=head2 Functions in the C<urxvt> Package
133		448
134	=over 4	449	=over 4
…		…
146	that calls this function.	461	that calls this function.
147		462
148	Using this function has the advantage that its output ends up in the	463	Using this function has the advantage that its output ends up in the
149	correct place, e.g. on stderr of the connecting urxvtc client.	464	correct place, e.g. on stderr of the connecting urxvtc client.
150		465
		466	Messages have a size limit of 1023 bytes currently.
		467
		468	=item $is_safe = urxvt::safe
		469
		470	Returns true when it is safe to do potentially unsafe things, such as
		471	evaluating perl code specified by the user. This is true when urxvt was
		472	started setuid or setgid.
		473
151	=item $time = urxvt::NOW	474	=item $time = urxvt::NOW
152		475
153	Returns the "current time" (as per the event loop).	476	Returns the "current time" (as per the event loop).
154		477
155	=cut	478	=item urxvt::CurrentTime
156		479
157	package urxvt;	480	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		481	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		482	Button4Mask, Button5Mask, AnyModifier
158		483
159	use strict;	484	Various constants for use in X calls and event processing.
160		485
161	our $term;	486	=back
162	our @HOOKNAME;	487
163	our $LIBDIR;	488	=head2 RENDITION
		489
		490	Rendition bitsets contain information about colour, font, font styles and
		491	similar information for each screen cell.
		492
		493	The following "macros" deal with changes in rendition sets. You should
		494	never just create a bitset, you should always modify an existing one,
		495	as they contain important information required for correct operation of
		496	rxvt-unicode.
		497
		498	=over 4
		499
		500	=item $rend = urxvt::DEFAULT_RSTYLE
		501
		502	Returns the default rendition, as used when the terminal is starting up or
		503	being reset. Useful as a base to start when creating renditions.
		504
		505	=item $rend = urxvt::OVERLAY_RSTYLE
		506
		507	Return the rendition mask used for overlays by default.
		508
		509	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		510
		511	Return the bit that enabled bold, italic, blink, reverse-video and
		512	underline, respectively. To enable such a style, just logically OR it into
		513	the bitset.
		514
		515	=item $foreground = urxvt::GET_BASEFG $rend
		516
		517	=item $background = urxvt::GET_BASEBG $rend
		518
		519	Return the foreground/background colour index, respectively.
		520
		521	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		522
		523	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		524
		525	Replace the foreground/background colour in the rendition mask with the
		526	specified one.
		527
		528	=item $value = urxvt::GET_CUSTOM $rend
		529
		530	Return the "custom" value: Every rendition has 5 bits for use by
		531	extensions. They can be set and changed as you like and are initially
		532	zero.
		533
		534	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		535
		536	Change the custom value.
		537
		538	=back
		539
		540	=cut
164		541
165	BEGIN {	542	BEGIN {
166	urxvt->bootstrap;	543	urxvt->bootstrap;
167		544
168	# overwrite perl's warn	545	# overwrite perl's warn
…		…
170	my $msg = join "", @_;	547	my $msg = join "", @_;
171	$msg .= "\n"	548	$msg .= "\n"
172	unless $msg =~ /\n$/;	549	unless $msg =~ /\n$/;
173	urxvt::warn ($msg);	550	urxvt::warn ($msg);
174	};	551	};
175	}
176		552
		553	# %ENV is the original startup environment
		554	delete $ENV{IFS};
		555	delete $ENV{CDPATH};
		556	delete $ENV{BASH_ENV};
		557	$ENV{PATH} = "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/bin:/opt/sbin";
		558	}
		559
		560	my @hook_count;
177	my $verbosity = $ENV{URXVT_PERL_VERBOSITY} || 10;	561	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
178		562
179	sub verbose {	563	sub verbose {
180	my ($level, $msg) = @_;	564	my ($level, $msg) = @_;
181	warn "$msg\n"; #d#	565	warn "$msg\n" if $level <= $verbosity;
182	}	566	}
183		567
184	my @invoke_cb;	568	my $extension_pkg = "extension0000";
		569	my %extension_pkg;
		570
		571	# load a single script into its own package, once only
		572	sub extension_package($) {
		573	my ($path) = @_;
		574
		575	$extension_pkg{$path} ||= do {
		576	my $pkg = "urxvt::" . ($extension_pkg++);
		577
		578	verbose 3, "loading extension '$path' into package '$pkg'";
		579
		580	open my $fh, "<:raw", $path
		581	or die "$path: $!";
		582
		583	my $source = untaint
		584	"package $pkg; use strict; use utf8;\n"
		585	. "use base urxvt::term::extension::;\n"
		586	. "#line 1 \"$path\"\n{\n"
		587	. (do { local $/; <$fh> })
		588	. "\n};\n1";
		589
		590	eval $source
		591	or die "$path: $@";
		592
		593	$pkg
		594	}
		595	}
		596
		597	our $retval; # return value for urxvt
185		598
186	# called by the rxvt core	599	# called by the rxvt core
187	sub invoke {	600	sub invoke {
188	local $term = shift;	601	local $TERM = shift;
189	my $htype = shift;	602	my $htype = shift;
190		603
191	my $cb = $invoke_cb[$htype];	604	if ($htype == 0) { # INIT
		605	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		606
		607	my %ext_arg;
192		608
193	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	609	for (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
194	if $verbosity >= 10;	610	if ($_ eq "default") {
		611	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback);
		612	} elsif (/^-(.*)$/) {
		613	delete $ext_arg{$1};
		614	} elsif (/^([^<]+)<(.*)>$/) {
		615	push @{ $ext_arg{$1} }, $2;
		616	} else {
		617	$ext_arg{$_} ||= [];
		618	}
		619	}
195		620
196	while (my ($k, $v) = each %$cb) {	621	while (my ($ext, $argv) = each %ext_arg) {
197	return 1 if $v->($term, @_);	622	my @files = grep -f $_, map "$_/$ext", @dirs;
		623
		624	if (@files) {
		625	$TERM->register_package (extension_package $files[0], $argv);
		626	} else {
		627	warn "perl extension '$ext' not found in perl library search path\n";
		628	}
		629	}
		630
		631	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		632	warn $@ if $@;
198	}	633	}
199		634
		635	$retval = undef;
		636
		637	if (my $cb = $TERM->{_hook}[$htype]) {
		638	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		639	if $verbosity >= 10;
		640
		641	keys %$cb;
		642
		643	while (my ($pkg, $cb) = each %$cb) {
		644	$retval = eval { $cb->($TERM->{_pkg}{$pkg}, @_) }
		645	and last;
		646
		647	if ($@) {
		648	$TERM->ungrab; # better to lose the grab than the session
		649	warn $@;
		650	}
		651	}
		652
		653	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		654	if $verbosity >= 11;
200	0	655	}
		656
		657	if ($htype == 1) { # DESTROY
		658	if (my $hook = delete $TERM->{_hook}) {
		659	for my $htype (0..$#$hook) {
		660	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
		661	or set_should_invoke $htype, 0;
		662	}
		663	}
		664
		665	# clear package objects
		666	%$_ = () for values %{ $TERM->{_pkg} };
		667
		668	# clear package
		669	%$TERM = ();
		670	}
		671
		672	$retval
201	}	673	}
		674
		675	sub exec_async(@) {
		676	my $pid = fork;
		677
		678	return
		679	if !defined $pid or $pid;
		680
		681	%ENV = %{ $TERM->env };
		682
		683	exec @_;
		684	_exit 255;
		685	}
		686
		687	# urxvt::term::extension
		688
		689	package urxvt::term::extension;
		690
		691	sub enable {
		692	my ($self, %hook) = @_;
		693	my $pkg = $self->{_pkg};
		694
		695	while (my ($name, $cb) = each %hook) {
		696	my $htype = $HOOKTYPE{uc $name};
		697	defined $htype
		698	or Carp::croak "unsupported hook type '$name'";
		699
		700	unless (exists $self->{term}{_hook}[$htype]{$pkg}) {
		701	$hook_count[$htype]++
		702	or urxvt::set_should_invoke $htype, 1;
		703	}
		704
		705	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		706	}
		707	}
		708
		709	sub disable {
		710	my ($self, @hook) = @_;
		711	my $pkg = $self->{_pkg};
		712
		713	for my $name (@hook) {
		714	my $htype = $HOOKTYPE{uc $name};
		715	defined $htype
		716	or Carp::croak "unsupported hook type '$name'";
		717
		718	if (delete $self->{term}{_hook}[$htype]{$pkg}) {
		719	--$hook_count[$htype]
		720	or urxvt::set_should_invoke $htype, 0;
		721	}
		722	}
		723	}
		724
		725	our $AUTOLOAD;
		726
		727	sub AUTOLOAD {
		728	$AUTOLOAD =~ /:([^:]+)$/
		729	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		730
		731	eval qq{
		732	sub $AUTOLOAD {
		733	my \$proxy = shift;
		734	\$proxy->{term}->$1 (\@_)
		735	}
		736	1
		737	} or die "FATAL: unable to compile method forwarder: $@";
		738
		739	goto &$AUTOLOAD;
		740	}
		741
		742	sub DESTROY {
		743	# nop
		744	}
		745
		746	# urxvt::destroy_hook
		747
		748	sub urxvt::destroy_hook::DESTROY {
		749	${$_[0]}->();
		750	}
		751
		752	sub urxvt::destroy_hook(&) {
		753	bless \shift, urxvt::destroy_hook::
		754	}
		755
		756	package urxvt::anyevent;
		757
		758	=head2 The C<urxvt::anyevent> Class
		759
		760	The sole purpose of this class is to deliver an interface to the
		761	C<AnyEvent> module - any module using it will work inside urxvt without
		762	further programming. The only exception is that you cannot wait on
		763	condition variables, but non-blocking condvar use is ok. What this means
		764	is that you cannot use blocking APIs, but the non-blocking variant should
		765	work.
		766
		767	=cut
		768
		769	our $VERSION = 1;
		770
		771	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		772	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		773
		774	sub timer {
		775	my ($class, %arg) = @_;
		776
		777	my $cb = $arg{cb};
		778
		779	urxvt::timer
		780	->new
		781	->start (urxvt::NOW + $arg{after})
		782	->cb (sub {
		783	$_[0]->stop; # need to cancel manually
		784	$cb->();
		785	})
		786	}
		787
		788	sub io {
		789	my ($class, %arg) = @_;
		790
		791	my $cb = $arg{cb};
		792
		793	bless [$arg{fh}, urxvt::iow
		794	->new
		795	->fd (fileno $arg{fh})
		796	->events (($arg{poll} =~ /r/ ? 1 : 0)
		797	| ($arg{poll} =~ /w/ ? 2 : 0))
		798	->start
		799	->cb (sub {
		800	$cb->(($_[1] & 1 ? 'r' : '')
		801	. ($_[1] & 2 ? 'w' : ''));
		802	})],
		803	urxvt::anyevent::
		804	}
		805
		806	sub DESTROY {
		807	$_[0][1]->stop;
		808	}
		809
		810	sub condvar {
		811	bless \my $flag, urxvt::anyevent::condvar::
		812	}
		813
		814	sub urxvt::anyevent::condvar::broadcast {
		815	${$_[0]}++;
		816	}
		817
		818	sub urxvt::anyevent::condvar::wait {
		819	unless (${$_[0]}) {
		820	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		821	}
		822	}
		823
		824	package urxvt::term;
		825
		826	=head2 The C<urxvt::term> Class
		827
		828	=over 4
		829
		830	=cut
202		831
203	# find on_xxx subs in the package and register them	832	# find on_xxx subs in the package and register them
204	# as hooks	833	# as hooks
205	sub register_package($) {	834	sub register_package {
206	my ($pkg) = @_;	835	my ($self, $pkg, $argv) = @_;
207		836
		837	my $proxy = bless {
		838	_pkg => $pkg,
		839	argv => $argv,
		840	}, $pkg;
		841	Scalar::Util::weaken ($proxy->{term} = $self);
		842
		843	$self->{_pkg}{$pkg} = $proxy;
		844
208	for my $hook (0.. $#HOOKNAME) {	845	for my $name (@HOOKNAME) {
209	my $name = $HOOKNAME[$hook];
210
211	my $ref = $pkg->can ("on_" . lc $name)	846	if (my $ref = $pkg->can ("on_" . lc $name)) {
212	or next;	847	$proxy->enable ($name => $ref);
213		848	}
214	$invoke_cb[$hook]{$ref*1} = $ref;
215	set_should_invoke $hook, 1;
216	}	849	}
217	}	850	}
218		851
219	my $script_pkg = "script0000";	852	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
220	my %script_pkg;
221		853
222	# load a single script into its own package, once only	854	Creates a new terminal, very similar as if you had started it with system
223	sub load_script($) {	855	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
224	my ($path) = @_;	856	hash which defines the environment of the new terminal.
225		857
226	$script_pkg{$path} ||= do {	858	Croaks (and probably outputs an error message) if the new instance
227	my $pkg = $script_pkg++;	859	couldn't be created. Returns C<undef> if the new instance didn't
228	verbose 3, "loading script '$path' into package '$pkg'";	860	initialise perl, and the terminal object otherwise. The C<init> and
		861	C<start> hooks will be called during this call.
229		862
230	open my $fh, "<:raw", $path	863	=cut
231	or die "$path: $!";
232		864
233	eval "package $pkg; use strict; use utf8;\n"	865	sub new {
234	. "#line 1 \"$path\"\n"	866	my ($class, $env, @args) = @_;
235	. do { local $/; <$fh> }
236	or die "$path: $@";
237		867
238	register_package $pkg;	868	_new ([ map "$_=$env->{$_}", keys %$env ], @args);
239
240	$pkg
241	};
242	}	869	}
243		870
244	sub load_scripts($) {	871	=item $term->destroy
245	my ($dir) = @_;
246		872
247	verbose 3, "loading scripts from '$dir'";	873	Destroy the terminal object (close the window, free resources
		874	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		875	watchers (timers, io watchers) are still active.
248		876
249	load_script $_	877	=item $isset = $term->option ($optval[, $set])
250	for grep -f $_,
251	<$dir/perl-ext/*>;
252	}
253		878
254	sub on_init {	879	Returns true if the option specified by C<$optval> is enabled, and
255	my ($term) = @_;	880	optionally change it. All option values are stored by name in the hash
		881	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
256		882
257	my $libdir = $term->resource ("perl_lib");	883	Here is a a likely non-exhaustive list of option names, please see the
		884	source file F</src/optinc.h> to see the actual list:
258		885
259	load_scripts $libdir	886	borderLess console cursorBlink cursorUnderline hold iconic insecure
260	if defined $libdir;	887	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
261	}	888	pastableTabs pointerBlank reverseVideo scrollBar scrollBar_floating
262		889	scrollBar_right scrollTtyKeypress scrollTtyOutput scrollWithBuffer
263	register_package __PACKAGE__;	890	secondaryScreen secondaryScroll skipBuiltinGlyphs transparent
264	load_scripts $LIBDIR;	891	tripleclickwords utmpInhibit visualBell
265
266	=back
267
268	=head2 The C<urxvt::term> Class
269
270	=over 4
271		892
272	=item $value = $term->resource ($name[, $newval])	893	=item $value = $term->resource ($name[, $newval])
273		894
274	Returns the current resource value associated with a given name and	895	Returns the current resource value associated with a given name and
275	optionally sets a new value. Setting values is most useful in the C<init>	896	optionally sets a new value. Setting values is most useful in the C<init>
…		…
285		906
286	Please note that resource strings will currently only be freed when the	907	Please note that resource strings will currently only be freed when the
287	terminal is destroyed, so changing options frequently will eat memory.	908	terminal is destroyed, so changing options frequently will eat memory.
288		909
289	Here is a a likely non-exhaustive list of resource names, not all of which	910	Here is a a likely non-exhaustive list of resource names, not all of which
290	are supported in every build, please see the source to see the actual	911	are supported in every build, please see the source file F</src/rsinc.h>
291	list:	912	to see the actual list:
292		913
293	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	914	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
294	borderLess color cursorBlink cursorUnderline cutchars delete_key	915	borderLess color cursorBlink cursorUnderline cutchars delete_key
295	display_name embed ext_bwidth fade font geometry hold iconName	916	display_name embed ext_bwidth fade font geometry hold iconName
296	imFont imLocale inputMethod insecure int_bwidth intensityStyles	917	imFont imLocale inputMethod insecure int_bwidth intensityStyles
297	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8	918	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
298	modifier mouseWheelScrollPage name pastableTabs path perl perl_eval	919	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
299	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	920	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
300	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	921	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
301	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	922	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
302	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	923	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
303	shade term_name title transparent transparent_all tripleclickwords	924	shade term_name title transparent transparent_all tripleclickwords
304	utmpInhibit visualBell	925	utmpInhibit visualBell
305		926
306	=cut	927	=cut
307		928
308	sub urxvt::term::resource($$;$) {	929	sub resource($$;$) {
309	my ($self, $name) = (shift, shift);	930	my ($self, $name) = (shift, shift);
310	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	931	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
311	goto &urxvt::term::_resource;	932	&urxvt::term::_resource
312	}	933	}
		934
		935	=item $value = $term->x_resource ($pattern)
		936
		937	Returns the X-Resource for the given pattern, excluding the program or
		938	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		939	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		940	resource with that pattern exists.
		941
		942	This method should only be called during the C<on_start> hook, as there is
		943	only one resource database per display, and later invocations might return
		944	the wrong resources.
		945
		946	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		947
		948	Adds a keymap translation exactly as specified via a resource. See the
		949	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		950
		951	=item $rend = $term->rstyle ([$new_rstyle])
		952
		953	Return and optionally change the current rendition. Text that is output by
		954	the terminal application will use this style.
		955
		956	=item ($row, $col) = $term->screen_cur ([$row, $col])
		957
		958	Return the current coordinates of the text cursor position and optionally
		959	set it (which is usually bad as applications don't expect that).
313		960
314	=item ($row, $col) = $term->selection_mark ([$row, $col])	961	=item ($row, $col) = $term->selection_mark ([$row, $col])
315		962
316	=item ($row, $col) = $term->selection_beg ([$row, $col])	963	=item ($row, $col) = $term->selection_beg ([$row, $col])
317		964
318	=item ($row, $col) = $term->selection_end ([$row, $col])	965	=item ($row, $col) = $term->selection_end ([$row, $col])
319		966
320	Return the current values of the selection mark, begin or end positions,	967	Return the current values of the selection mark, begin or end positions,
321	and optionally set them to new values.	968	and optionally set them to new values.
322		969
		970	=item $term->selection_make ($eventtime[, $rectangular])
		971
		972	Tries to make a selection as set by C<selection_beg> and
		973	C<selection_end>. If C<$rectangular> is true (default: false), a
		974	rectangular selection will be made. This is the prefered function to make
		975	a selection.
		976
323	=item $success = $term->selection_grab ($eventtime)	977	=item $success = $term->selection_grab ($eventtime)
324		978
325	Try to request the primary selection from the server (for example, as set	979	Try to request the primary selection text from the server (for example, as
326	by the next method).	980	set by the next method). No visual feedback will be given. This function
		981	is mostly useful from within C<on_sel_grab> hooks.
327		982
328	=item $oldtext = $term->selection ([$newtext])	983	=item $oldtext = $term->selection ([$newtext])
329		984
330	Return the current selection text and optionally replace it by C<$newtext>.	985	Return the current selection text and optionally replace it by C<$newtext>.
331		986
332	=item $term->scr_overlay ($x, $y, $text)	987	=item $term->overlay_simple ($x, $y, $text)
333		988
334	Create a simple multi-line overlay box. See the next method for details.	989	Create a simple multi-line overlay box. See the next method for details.
335		990
336	=cut	991	=cut
337		992
338	sub urxvt::term::scr_overlay {	993	sub overlay_simple {
339	my ($self, $x, $y, $text) = @_;	994	my ($self, $x, $y, $text) = @_;
340		995
341	my @lines = split /\n/, $text;	996	my @lines = split /\n/, $text;
342		997
343	my $w = 0;	998	my $w = List::Util::max map $self->strwidth ($_), @lines;
344	for (map $self->strwidth ($_), @lines) {
345	$w = $_ if $w < $_;
346	}
347		999
348	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1000	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
349	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1001	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
350	}
351		1002
		1003	$overlay
		1004	}
		1005
352	=item $term->scr_overlay_new ($x, $y, $width, $height)	1006	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
353		1007
354	Create a new (empty) overlay at the given position with the given	1008	Create a new (empty) overlay at the given position with the given
355	width/height. A border will be put around the box. If either C<$x> or	1009	width/height. C<$rstyle> defines the initial rendition style
356	C<$y> is negative, then this is counted from the right/bottom side,	1010	(default: C<OVERLAY_RSTYLE>).
357	respectively.
358		1011
359	=item $term->scr_overlay_off	1012	If C<$border> is C<2> (default), then a decorative border will be put
		1013	around the box.
360		1014
361	Switch the overlay off again.	1015	If either C<$x> or C<$y> is negative, then this is counted from the
		1016	right/bottom side, respectively.
362		1017
363	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1018	This method returns an urxvt::overlay object. The overlay will be visible
		1019	as long as the perl object is referenced.
364		1020
365	Put a single character (specified numerically) at the given overlay	1021	The methods currently supported on C<urxvt::overlay> objects are:
366	position.
367		1022
		1023	=over 4
		1024
368	=item $term->scr_overlay_set ($x, $y, $text)	1025	=item $overlay->set ($x, $y, $text, $rend)
369		1026
370	Write a string at the given position into the overlay.	1027	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1028	text in rxvt-unicode's special encoding and an array of rendition values
		1029	at a specific position inside the overlay.
371		1030
		1031	=item $overlay->hide
		1032
		1033	If visible, hide the overlay, but do not destroy it.
		1034
		1035	=item $overlay->show
		1036
		1037	If hidden, display the overlay again.
		1038
		1039	=back
		1040
		1041	=item $popup = $term->popup ($event)
		1042
		1043	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1044	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1045	currently).
		1046
		1047	=cut
		1048
		1049	sub popup {
		1050	my ($self, $event) = @_;
		1051
		1052	$self->grab ($event->{time}, 1)
		1053	or return;
		1054
		1055	my $popup = bless {
		1056	term => $self,
		1057	event => $event,
		1058	}, urxvt::popup::;
		1059
		1060	Scalar::Util::weaken $popup->{term};
		1061
		1062	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1063	Scalar::Util::weaken $self->{_destroy}{$popup};
		1064
		1065	$popup
		1066	}
		1067
372	=item $cellwidth = $term->strwidth $string	1068	=item $cellwidth = $term->strwidth ($string)
373		1069
374	Returns the number of screen-cells this string would need. Correctly	1070	Returns the number of screen-cells this string would need. Correctly
375	accounts for wide and combining characters.	1071	accounts for wide and combining characters.
376		1072
377	=item $octets = $term->locale_encode $string	1073	=item $octets = $term->locale_encode ($string)
378		1074
379	Convert the given text string into the corresponding locale encoding.	1075	Convert the given text string into the corresponding locale encoding.
380		1076
381	=item $string = $term->locale_decode $octets	1077	=item $string = $term->locale_decode ($octets)
382		1078
383	Convert the given locale-encoded octets into a perl string.	1079	Convert the given locale-encoded octets into a perl string.
384		1080
		1081	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1082
		1083	XORs the rendition values in the given span with the provided value
		1084	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1085	refresh hooks to provide effects similar to the selection.
		1086
		1087	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1088
		1089	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1090	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1091	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1092	it instead. Both styles I<MUST NOT> contain font styles.
		1093
		1094	=item $term->scr_bell
		1095
		1096	Ring the bell!
		1097
		1098	=item $term->scr_add_lines ($string)
		1099
		1100	Write the given text string to the screen, as if output by the application
		1101	running inside the terminal. It may not contain command sequences (escape
		1102	codes), but is free to use line feeds, carriage returns and tabs. The
		1103	string is a normal text string, not in locale-dependent encoding.
		1104
		1105	Normally its not a good idea to use this function, as programs might be
		1106	confused by changes in cursor position or scrolling. Its useful inside a
		1107	C<on_add_lines> hook, though.
		1108
		1109	=item $term->cmd_parse ($octets)
		1110
		1111	Similar to C<scr_add_lines>, but the argument must be in the
		1112	locale-specific encoding of the terminal and can contain command sequences
		1113	(escape codes) that will be interpreted.
		1114
385	=item $term->tt_write ($octets)	1115	=item $term->tt_write ($octets)
386		1116
387	Write the octets given in C<$data> to the tty (i.e. as program input). To	1117	Write the octets given in C<$data> to the tty (i.e. as program input). To
388	pass characters instead of octets, you should convetr you strings first to	1118	pass characters instead of octets, you should convert your strings first
389	the locale-specific encoding using C<< $term->locale_encode >>.	1119	to the locale-specific encoding using C<< $term->locale_encode >>.
		1120
		1121	=item $old_events = $term->pty_ev_events ([$new_events])
		1122
		1123	Replaces the event mask of the pty watcher by the given event mask. Can
		1124	be used to suppress input and output handling to the pty/tty. See the
		1125	description of C<< urxvt::timer->events >>. Make sure to always restore
		1126	the previous value.
		1127
		1128	=item $windowid = $term->parent
		1129
		1130	Return the window id of the toplevel window.
		1131
		1132	=item $windowid = $term->vt
		1133
		1134	Return the window id of the terminal window.
		1135
		1136	=item $window_width = $term->width
		1137
		1138	=item $window_height = $term->height
		1139
		1140	=item $font_width = $term->fwidth
		1141
		1142	=item $font_height = $term->fheight
		1143
		1144	=item $font_ascent = $term->fbase
		1145
		1146	=item $terminal_rows = $term->nrow
		1147
		1148	=item $terminal_columns = $term->ncol
		1149
		1150	=item $has_focus = $term->focus
		1151
		1152	=item $is_mapped = $term->mapped
		1153
		1154	=item $max_scrollback = $term->saveLines
		1155
		1156	=item $nrow_plus_saveLines = $term->total_rows
		1157
		1158	=item $lines_in_scrollback = $term->nsaved
		1159
		1160	Return various integers describing terminal characteristics.
		1161
		1162	=item $x_display = $term->display_id
		1163
		1164	Return the DISPLAY used by rxvt-unicode.
		1165
		1166	=item $lc_ctype = $term->locale
		1167
		1168	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1169
		1170	=item $env = $term->env
		1171
		1172	Returns a copy of the environment in effect for the terminal as a hashref
		1173	similar to C<\%ENV>.
		1174
		1175	=cut
		1176
		1177	sub env {
		1178	if (my $env = $_[0]->_env) {
		1179	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), @$env }
		1180	} else {
		1181	+{ %ENV }
		1182	}
		1183	}
		1184
		1185	=item $modifiermask = $term->ModLevel3Mask
		1186
		1187	=item $modifiermask = $term->ModMetaMask
		1188
		1189	=item $modifiermask = $term->ModNumLockMask
		1190
		1191	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1192	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1193
		1194	=item $view_start = $term->view_start ([$newvalue])
		1195
		1196	Returns the negative row number of the topmost line. Minimum value is
		1197	C<0>, which displays the normal terminal contents. Larger values scroll
		1198	this many lines into the scrollback buffer.
		1199
		1200	=item $term->want_refresh
		1201
		1202	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1203	compare the on-screen display with its stored representation. If they
		1204	differ, it redraws the differences.
		1205
		1206	Used after changing terminal contents to display them.
		1207
		1208	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		1209
		1210	Returns the text of the entire row with number C<$row_number>. Row C<0>
		1211	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
		1212	terminal line. The scrollback buffer starts at line C<-1> and extends to
		1213	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
		1214	is requested.
		1215
		1216	If C<$new_text> is specified, it will replace characters in the current
		1217	line, starting at column C<$start_col> (default C<0>), which is useful
		1218	to replace only parts of a line. The font index in the rendition will
		1219	automatically be updated.
		1220
		1221	C<$text> is in a special encoding: tabs and wide characters that use more
		1222	than one cell when displayed are padded with urxvt::NOCHAR characters
		1223	(C<chr 65535>). Characters with combining characters and other characters
		1224	that do not fit into the normal tetx encoding will be replaced with
		1225	characters in the private use area.
		1226
		1227	You have to obey this encoding when changing text. The advantage is
		1228	that C<substr> and similar functions work on screen cells and not on
		1229	characters.
		1230
		1231	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		1232	can be used to convert normal strings into this encoding and vice versa.
		1233
		1234	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		1235
		1236	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1237	bitsets. Rendition bitsets contain information about colour, font, font
		1238	styles and similar information. See also C<< $term->ROW_t >>.
		1239
		1240	When setting rendition, the font mask will be ignored.
		1241
		1242	See the section on RENDITION, above.
		1243
		1244	=item $length = $term->ROW_l ($row_number[, $new_length])
		1245
		1246	Returns the number of screen cells that are in use ("the line
		1247	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1248	line is joined with the following one.
		1249
		1250	=item $bool = $term->is_longer ($row_number)
		1251
		1252	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1253	joined with the following row), which means all characters are in use
		1254	and it is continued on the next row (and possibly a continuation of the
		1255	previous row(s)).
		1256
		1257	=item $line = $term->line ($row_number)
		1258
		1259	Create and return a new C<urxvt::line> object that stores information
		1260	about the logical line that row C<$row_number> is part of. It supports the
		1261	following methods:
		1262
		1263	=over 4
		1264
		1265	=item $text = $line->t ([$new_text])
		1266
		1267	Returns or replaces the full text of the line, similar to C<ROW_t>
		1268
		1269	=item $rend = $line->r ([$new_rend])
		1270
		1271	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1272
		1273	=item $length = $line->l
		1274
		1275	Returns the length of the line in cells, similar to C<ROW_l>.
		1276
		1277	=item $rownum = $line->beg
		1278
		1279	=item $rownum = $line->end
		1280
		1281	Return the row number of the first/last row of the line, respectively.
		1282
		1283	=item $offset = $line->offset_of ($row, $col)
		1284
		1285	Returns the character offset of the given row|col pair within the logical
		1286	line. Works for rows outside the line, too, and returns corresponding
		1287	offsets outside the string.
		1288
		1289	=item ($row, $col) = $line->coord_of ($offset)
		1290
		1291	Translates a string offset into terminal coordinates again.
		1292
		1293	=back
		1294
		1295	=cut
		1296
		1297	sub line {
		1298	my ($self, $row) = @_;
		1299
		1300	my $maxrow = $self->nrow - 1;
		1301
		1302	my ($beg, $end) = ($row, $row);
		1303
		1304	--$beg while $self->ROW_is_longer ($beg - 1);
		1305	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1306
		1307	bless {
		1308	term => $self,
		1309	beg => $beg,
		1310	end => $end,
		1311	ncol => $self->ncol,
		1312	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1313	}, urxvt::line::
		1314	}
		1315
		1316	sub urxvt::line::t {
		1317	my ($self) = @_;
		1318
		1319	if (@_ > 1)
		1320	{
		1321	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1322	for $self->{beg} .. $self->{end};
		1323	}
		1324
		1325	defined wantarray &&
		1326	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1327	0, $self->{len}
		1328	}
		1329
		1330	sub urxvt::line::r {
		1331	my ($self) = @_;
		1332
		1333	if (@_ > 1)
		1334	{
		1335	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1336	for $self->{beg} .. $self->{end};
		1337	}
		1338
		1339	if (defined wantarray) {
		1340	my $rend = [
		1341	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1342	];
		1343	$#$rend = $self->{len} - 1;
		1344	return $rend;
		1345	}
		1346
		1347	()
		1348	}
		1349
		1350	sub urxvt::line::beg { $_[0]{beg} }
		1351	sub urxvt::line::end { $_[0]{end} }
		1352	sub urxvt::line::l { $_[0]{len} }
		1353
		1354	sub urxvt::line::offset_of {
		1355	my ($self, $row, $col) = @_;
		1356
		1357	($row - $self->{beg}) * $self->{ncol} + $col
		1358	}
		1359
		1360	sub urxvt::line::coord_of {
		1361	my ($self, $offset) = @_;
		1362
		1363	use integer;
		1364
		1365	(
		1366	$offset / $self->{ncol} + $self->{beg},
		1367	$offset % $self->{ncol}
		1368	)
		1369	}
		1370
		1371	=item $text = $term->special_encode $string
		1372
		1373	Converts a perl string into the special encoding used by rxvt-unicode,
		1374	where one character corresponds to one screen cell. See
		1375	C<< $term->ROW_t >> for details.
		1376
		1377	=item $string = $term->special_decode $text
		1378
		1379	Converts rxvt-unicodes text reprsentation into a perl string. See
		1380	C<< $term->ROW_t >> for details.
		1381
		1382	=item $success = $term->grab_button ($button, $modifiermask)
		1383
		1384	Registers a synchronous button grab. See the XGrabButton manpage.
		1385
		1386	=item $success = $term->grab ($eventtime[, $sync])
		1387
		1388	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1389	synchronous (C<$sync> is true). Also remembers the grab timestampe.
		1390
		1391	=item $term->allow_events_async
		1392
		1393	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1394
		1395	=item $term->allow_events_sync
		1396
		1397	Calls XAllowEvents with SyncBoth for the most recent grab.
		1398
		1399	=item $term->allow_events_replay
		1400
		1401	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1402	recent grab.
		1403
		1404	=item $term->ungrab
		1405
		1406	Calls XUngrab for the most recent grab. Is called automatically on
		1407	evaluation errors, as it is better to lose the grab in the error case as
		1408	the session.
		1409
		1410	=back
		1411
		1412	=cut
		1413
		1414	package urxvt::popup;
		1415
		1416	=head2 The C<urxvt::popup> Class
		1417
		1418	=over 4
		1419
		1420	=cut
		1421
		1422	sub add_item {
		1423	my ($self, $item) = @_;
		1424
		1425	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1426	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1427	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1428
		1429	$item->{render} ||= sub { $_[0]{text} };
		1430
		1431	push @{ $self->{item} }, $item;
		1432	}
		1433
		1434	=item $popup->add_title ($title)
		1435
		1436	Adds a non-clickable title to the popup.
		1437
		1438	=cut
		1439
		1440	sub add_title {
		1441	my ($self, $title) = @_;
		1442
		1443	$self->add_item ({
		1444	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1445	text => $title,
		1446	activate => sub { },
		1447	});
		1448	}
		1449
		1450	=item $popup->add_separator ([$sepchr])
		1451
		1452	Creates a separator, optionally using the character given as C<$sepchr>.
		1453
		1454	=cut
		1455
		1456	sub add_separator {
		1457	my ($self, $sep) = @_;
		1458
		1459	$sep ||= "=";
		1460
		1461	$self->add_item ({
		1462	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1463	text => "",
		1464	render => sub { $sep x $self->{term}->ncol },
		1465	activate => sub { },
		1466	});
		1467	}
		1468
		1469	=item $popup->add_button ($text, $cb)
		1470
		1471	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1472	selected.
		1473
		1474	=cut
		1475
		1476	sub add_button {
		1477	my ($self, $text, $cb) = @_;
		1478
		1479	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1480	}
		1481
		1482	=item $popup->add_toggle ($text, $cb, $initial_value)
		1483
		1484	Adds a toggle/checkbox item to the popup. Teh callback gets called
		1485	whenever it gets toggled, with a boolean indicating its value as its first
		1486	argument.
		1487
		1488	=cut
		1489
		1490	sub add_toggle {
		1491	my ($self, $text, $cb, $value) = @_;
		1492
		1493	my $item; $item = {
		1494	type => "button",
		1495	text => " $text",
		1496	value => $value,
		1497	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1498	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1499	};
		1500
		1501	$self->add_item ($item);
		1502	}
		1503
		1504	=item $popup->show
		1505
		1506	Displays the popup (which is initially hidden).
		1507
		1508	=cut
		1509
		1510	sub show {
		1511	my ($self) = @_;
		1512
		1513	local $urxvt::popup::self = $self;
		1514
		1515	my $env = $self->{term}->env;
		1516	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1517	delete $env->{LC_ALL};
		1518	$env->{LC_CTYPE} = $self->{term}->locale;
		1519
		1520	urxvt::term->new ($env, $self->{term}->resource ("name"),
		1521	"--perl-lib" => "", "--perl-ext-common" => "", "-pty-fd" => -1, "-sl" => 0, "-b" => 0,
		1522	"--transient-for" => $self->{term}->parent,
		1523	"-display" => $self->{term}->display_id,
		1524	"-pe" => "urxvt-popup")
		1525	or die "unable to create popup window\n";
		1526	}
		1527
		1528	sub DESTROY {
		1529	my ($self) = @_;
		1530
		1531	delete $self->{term}{_destroy}{$self};
		1532	$self->{term}->ungrab;
		1533	}
390		1534
391	=back	1535	=back
392		1536
393	=head2 The C<urxvt::timer> Class	1537	=head2 The C<urxvt::timer> Class
394		1538
395	This class implements timer watchers/events. Time is represented as a	1539	This class implements timer watchers/events. Time is represented as a
396	fractional number of seconds since the epoch. Example:	1540	fractional number of seconds since the epoch. Example:
397		1541
398	# create a digital clock display in upper right corner	1542	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
399	$term->{timer} = urxvt::timer	1543	$term->{timer} = urxvt::timer
400	->new	1544	->new
401	->start (urxvt::NOW)	1545	->interval (1)
402	->cb (sub {	1546	->cb (sub {
403	my ($timer) = @_;
404	my $time = $timer->at;
405	$timer->start ($time + 1);
406	$self->scr_overlay (-1, 0,	1547	$term->{overlay}->set (0, 0,
407	POSIX::strftime "%H:%M:%S", localtime $time);	1548	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
408	});	1549	});
409		1550
410	=over 4	1551	=over 4
411		1552
412	=item $timer = new urxvt::timer	1553	=item $timer = new urxvt::timer
413		1554
414	Create a new timer object in stopped state.	1555	Create a new timer object in started state. It is scheduled to fire
		1556	immediately.
415		1557
416	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	1558	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
417		1559
418	Set the callback to be called when the timer triggers.	1560	Set the callback to be called when the timer triggers.
419		1561
…		…
422	Return the time this watcher will fire next.	1564	Return the time this watcher will fire next.
423		1565
424	=item $timer = $timer->set ($tstamp)	1566	=item $timer = $timer->set ($tstamp)
425		1567
426	Set the time the event is generated to $tstamp.	1568	Set the time the event is generated to $tstamp.
		1569
		1570	=item $timer = $timer->interval ($interval)
		1571
		1572	Normally (and when C<$interval> is C<0>), the timer will automatically
		1573	stop after it has fired once. If C<$interval> is non-zero, then the timer
		1574	is automatically rescheduled at the given intervals.
427		1575
428	=item $timer = $timer->start	1576	=item $timer = $timer->start
429		1577
430	Start the timer.	1578	Start the timer.
431		1579
…		…
445		1593
446	$term->{socket} = ...	1594	$term->{socket} = ...
447	$term->{iow} = urxvt::iow	1595	$term->{iow} = urxvt::iow
448	->new	1596	->new
449	->fd (fileno $term->{socket})	1597	->fd (fileno $term->{socket})
450	->events (1) # wait for read data	1598	->events (urxvt::EVENT_READ)
451	->start	1599	->start
452	->cb (sub {	1600	->cb (sub {
453	my ($iow, $revents) = @_;	1601	my ($iow, $revents) = @_;
454	# $revents must be 1 here, no need to check	1602	# $revents must be 1 here, no need to check
455	sysread $term->{socket}, my $buf, 8192	1603	sysread $term->{socket}, my $buf, 8192
…		…
472		1620
473	Set the filedescriptor (not handle) to watch.	1621	Set the filedescriptor (not handle) to watch.
474		1622
475	=item $iow = $iow->events ($eventmask)	1623	=item $iow = $iow->events ($eventmask)
476		1624
477	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1625	Set the event mask to watch. The only allowed values are
478	data, Bit #1 (value C<2>) enables watching for write data.	1626	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1627	together, or C<urxvt::EVENT_NONE>.
479		1628
480	=item $iow = $iow->start	1629	=item $iow = $iow->start
481		1630
482	Start watching for requested events on the given handle.	1631	Start watching for requested events on the given handle.
483		1632
…		…
494	This variable controls the verbosity level of the perl extension. Higher	1643	This variable controls the verbosity level of the perl extension. Higher
495	numbers indicate more verbose output.	1644	numbers indicate more verbose output.
496		1645
497	=over 4	1646	=over 4
498		1647
499	=item 0 - only fatal messages	1648	=item == 0 - fatal messages
500		1649
501	=item 3 - script loading and management	1650	=item >= 3 - script loading and management
502		1651
503	=item 10 - all events received	1652	=item >=10 - all called hooks
		1653
		1654	=item >=11 - hook reutrn values
504		1655
505	=back	1656	=back
506		1657
507	=head1 AUTHOR	1658	=head1 AUTHOR
508		1659

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